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25 December, 23:19

The formula for the circumference of a circle is c=pi r where r is the radius and c is the circumference. The equation solved for r is r=c/2pi. Find the radius of a circle that has a circumference of 16pi.

A. r=4

B. r=8

C. r=12

D. r=16

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Answers (1)
  1. 25 December, 23:31
    0
    B. r=8

    Step-by-step explanation:

    r=c/2pi

    We are given c = 16 pi

    r = 16pi / 2pi

    The pi on the top and bottom cancel

    r = 16/2

    r = 8
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